I did. But I don't think skimmer less is the problem 100%. I'll work on things over the next while and see if I can get it back the way it was a couple of weeks ago. With better water again and water changes, less feedings and lights out, should be able to get rid of the cyano. If not, then I'll throw the skimmer in and see if that helps.
It does look like people do run slimmer less successfully, just with different husbandry practices. This is my simple tank and want to keep it that way.
